I hope there is a nutritionist or someone on here that can suggest what I should do.

First I started the UltraMetabolism program last year and quit after a few days and now I remember why.  Today I started UltraSimple diet feeling very gung-ho that I could stick it out this time.  I knew that last time I had a reaction to the shakes.  So to start out on day one I made the shake using these ingredients:

 1/2 cup fresh strawberries

6 oz. water

1 TBSP rice protein powder (half the suggested amount)

1/2 TBSP flax seed (1/4 the suggested amount)

I thought that by decreasing the amount of the the protein and flax that I would not have a reaction but boy was I WRONG!  About 20 minutes after consuming the shake I began to have the most horrible case of acid reflux!  The acid was coming up making me cough, I had chest pain, esophogeal spasms, and had to cough up and spit out all acid that came up...I guess that's what it was.  Hate to sound gross but it was slimy and frothy clear stuff.  I have no idea what it was...but finally after an hour of gagging over the toilet I am almost completely over the sick spell.  What is that?  Why would the shake cause such a reaction in me?  I didn't use the flax/borage oil because I ordered it and it hasn't come in yet.  

I started off the day with the juice of 1/2 lemon  plus only 1 TBSP evoo (trying to ease into this to be gentle on my apparently sensitive body).  Then I had the hot lemon water and the green tea.  

 I hope someone can explain to me why my body reacts to the flax/protein this way?  Am i allergic to it?  Is this detox?  Could there be something seriously wrong with my stomach like an ulcer or something that is causing my system to reject the flax/protein?  

So what do I do?  Keep torturing myself?  Or is the shake absolutely necessary?  Maybe I can eat something else for breakfast.  I just don't that I can suffer through this everyday.  That was the worst pain I have ever experienced!

 Please help :)